S6K Diesel Used Engine Blocks For Excavator E200B E320C 212 - 8566
|Car name: Engine cylinder block||Model Number: S6k|
|Cylinder stroke: 130||Cylinder diameter: 102|
|Application: Excavator||valve: 12 valve|
|Cooling: Water cooling||Injection: Direct|
What is Cylinder Block and Cylinder Liner?
The reliability of an automobile engine depends on the proper construction of the engine components. The constructional details depend on the stresses and the function of the elements.
What is Cylinder Block?
The cylinder walls are machined to provide a very smooth finish. Special grinding stones produce small grooves in the cylinder walls, which collect oil.
These grooves help to lubricate the piston rings and piston skirts. Previously, most cylinder blocks were made of cast iron or grey iron as the material was easy to machine.
Aluminum pistons wear very well against cast iron cylinder walls. The main disadvantage of iron being is its weight, engine blocks are now being cast from lightweight aluminum.
An aluminum block weighs much less than a cast-iron block. An aluminum piston skin rubbing against an aluminum cylinder wall wears very quickly.
Most aluminum cylinder blocks are fitted with steel, or ductile iron cylinder bore liners.
What is Cylinder Liner?
The cylinder liner is a sleeve in which the piston of an engine reciprocates. The life of a cylinder between its re-bores depends on two main factors:
(1) Abrasion, and (2) Corrosion.
Abrasion depends on the atmospheric condition and the efficiency of the air filter and oil filter. Dusty atmospheric air is more harmful as it increases abrasion in the cylinder.
Corrosion of the cylinder is caused due to the corrosive products of combustion, which are formed after burning of fuel with air.
Corrosion is accelerated at low cylinder temperature due to acid bearing moisture on the cylinder walls. The use of separate barrels or sleeves, which are known as cylinder liners, provides a long life to the cylinder.
These cylinder liners are made of superior material and are fitted in the cylinder block. The liners are removable and can be replaced when worn or damaged.
The cylinder liner should have good wear resistance and the ability to retain oil to lubricate the surface between the walls and the piston rings.
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